Answer:
Materials that come straight from the source. They aren't created or altered in any way. They are used as is.
The answer is a telegraph.
Especially known as the creator of the incandescent lamp, Thomas Edison was responsible for several devices important to the trajectory and development of mankind.
<u>One of the earliest inventions that made Thomas Edison famous, the phonograph was the first machine capable of recording and reproducing sounds.
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The telegraph breakthrough occurred while Edison was trying to improve the telegraph transmitter when he realized that the movement of the paper tape through the machine produced a noise that resembled spoken words when played at high speed.
Strikes can create positive conditions in that: They bring attention to the bad conditions workers faced.
<h3>What are Strikes?</h3>
Strikes also known as industrial action is a situation where worker protest about a certain thing either the working conditions or the workers warfare by not going to work. When workers strike, everybody stays at home. In some circumstances, they barricade or close down the road or gates of the industry.
Strikes help the authorities to focus their attention to the bad working conditions in which workers operate. So option C is correct.
Learn more about Strikes here:
brainly.com/question/5171285
